Dortmund’s CEO Hans-Joachim Watzke said: “There has been an attack with explosives on the team bus.

“The whole team is in a state of shock, you can’t get pictures like that out of your head.”

He added: “I hope the team will be in a position to be able to compete tomorrow on the pitch. In a crisis situation like this, Borussia pulls together.”

One of the Dortmund players, Mathias Ginter, was involved in the Germany-France match that was targeted in the terror attacks in Paris on 13 November, 2015. Another present in Paris, Andre Schurrle, was injured for the Monaco match.